Pocket tool with a light pointer

Abstract

The invention relates to a compact light module ( 1 ), that is eye-safe as far as possible, comprising an electrical power source ( 2 ), a voltage converter ( 3 ) and a radiation source for electromagnetic radiation ( 4 ), wherein a power limiter ( 5 ) is provided for controlling the emitted electromagnetic radiation. The invention also relates to a pocket tool, in particular a pocket knife ( 26 ) or board-like tool card ( 31 ) with a light module ( 32 ) for emitting electromagnetic radiation which is arranged in the housing ( 27 ) and can be operated by means of an activating element ( 30 ), whereby the light module ( 32 ) is designed to emit monochromatic electromagnetic radiation with limited radiation output.

1. Compact, light module ( 1 ) that is substantially eye-safe comprising an electrical power source ( 2 ), a voltage converter ( 3 ) and a radiation source for electromagnetic radiation ( 4 ), also comprising a power limiter ( 5 ) for controlling the emitted electromagnetic radiation, characterised in that the power limiter ( 5 ) and the radiation source ( 4 ) are arranged in an integrated manner and in that the voltage converter ( 3 ) is in the form of a step-down and step-up converter. 
     
     
       2. Light module according to  claim 1 , characterised in that the power limiter ( 5 ) comprises a first detecting element for electromagnetic radiation ( 9 ). 
     
     
       3. Light module according to  claim 1 , characterised in that the power limiter ( 5 ) comprises a control loop ( 11 ). 
     
     
       4. Light module according to  claim 2 , characterised in that the first detecting element ( 9 ) is designed as a photodiode. 
     
     
       5. Light module according to  claim 1 , characterised in that the first detecting element ( 9 ) and the radiation source ( 4 ) are arranged to be integrated into one module. 
     
     
       6. Light module according to  claim 1 , characterised in that the power limiter ( 5 ) is designed to influence the output voltage of the voltage converter ( 3 ). 
     
     
       7. Light module according to  claim 1 , characterised in that the power limiter ( 5 ) comprises a temperature detecting module ( 13 ). 
     
     
       8. Light module according to  claim 1 , characterised in that the power limiter ( 5 ) comprises a power configuration module ( 6 ). 
     
     
       9. Light module according to  claim 8 , characterised in that in the power configuration module ( 6 ) operating parameters ( 7 ) are stored for the radiation source ( 4 ). 
     
     
       10. Light module according to  claim 1 , characterised in that the radiation source ( 4 ) is in the form of a laser diode ( 14 ). 
     
     
       11. Light module according to  claim 10 , characterised in that the laser diode ( 14 ) emits electromagnetic radiation with a wavelength of 600 nm to 750 nm, preferably 655 nm. 
     
     
       12. Light module according to  claim 10 , characterised in that a cylinder attachment ( 21 ) is arranged on a flange-like section ( 23 ) of the laser diode ( 14 ). 
     
     
       13. Light module according to  claim 1 , characterised in that in the cylinder attachment ( 21 ) a beam shaping optical system ( 18 ) is arranged, in particular a collimating lens. 
     
     
       14. Light module according to  claim 1 , characterised in that the output of the emitted electromagnetic radiation is a maximum of 0.8 mW. 
     
     
       15. Light module according to  claim 1 , characterised in that a second detecting element ( 12 ) is provided for measuring the electromagnetic radiation of the environment. 
     
     
       16. Light module according to  claim 1 , characterised in that the energy source ( 2 ) emits a voltage of typically 1.55 V. 
     
     
       17. Pocket tool, with a housing ( 27 ) comprising at least one mounting area and at least one functional part ( 30 ), which can move out of a storage position inside the mounting area into a position of use outside the mounting area, and with a light module ( 32 ) for emitting electromagnetic radiation which is arranged in the housing ( 27 ) and can be operated by means of an activating element ( 30 ), characterised in that the light module ( 32 ) is designed according to  claim 1  and is also designed to emit monochromatic electromagnetic radiation with limited radiation output.